thread (for sewing, etc.) / yarn / string (cord) / cable, wire, flex / blade (of grass, etc.) / grain (of wood) / threads, strands / trickle (of water) / breath (of air) / wisp (of smoke) / edge (of blade) / ray (of light) / glimmer (of hope)

(taxonomy) phylum (a rank in the classification of organisms, below kingdom and above class)

first-person singular present indicative of filare

-phile

phyllo- (leaf) / phylo- (race etc.) / philo- (affinity); pro-; -phile / cable

common thread / main theme

barbed wire

dental floss, floss

wire

a thin trickle of water