Teretron, also referred to as Trypannon, (Greek “τέρετρον”: borer, from the verb “τερέω” : to pierce, to bore a hole) was a tool, similar to a gimlet, used by the Ancient Greeks for the drilling of timber structures.

..αὐτὰρ ὁ τάμνετο δοῦρα: θοῶς δέ οἱ ἤνυτο ἔργον.
εἴκοσι δ' ἔκβαλε πάντα, πελέκκησεν δ' ἄρα χαλκῷ,
ξέσσε δ' ἐπισταμένως καὶ ἐπὶ στάθμην ἴθυνε.
τόφρα δ' ἔνεικε τέρετρα Καλυψώ, δῖα θεάων:
τέτρηνεν δ' ἄρα πάντα καὶ ἥρμοσεν ἀλλήλοισι,
γόμφοισιν δ' ἄρα τήν γε καὶ ἁρμονίῃσιν ἄρασσεν.

* * *

...and he cut timber, and gave himself straight to his work
twenty he fell, and chiseled them with bronze,
adroitly he planned and leveled them,
and when Calypso the goddess divine brought teretra.
all he bored and fit them to each other,
with dowels and ropes he connected them
and brought them all together.


- Homer, The Odyssey, Book Five, 243 - 248